| Patent Number |
Title Of Patent |
Date Issued |
| 5515503 |
Self-repair system for an image forming apparatus |
May 7, 1996 |
| The present invention makes it possible to effectively make self-repair of a fault by referencing repair analysis cases. The cases are hierarchically classified according to the fault symptom, the fault and the class, and a case suitable for a fault developed is selected to perform repai |
| 5467355 |
Image forming apparatus provided with self-diagnosis system |
November 14, 1995 |
| In an image forming machine, an objective model storage device stores parameter data that represent elements of the machine and relationships among such parameters, and parameter membership functions, and fault diagnosis knowledge. A degradation storage device stores a fuzzy qualitat |
| 5463545 |
Functional redundancy control system |
October 31, 1995 |
| A so-called "softly broken apparatus" by constructing a self-repair apparatus based on functional redundancy. An apparatus is represented in a form including a function using an FBS diagram (a diagram comprising functions, behaviors and states). When a fault occurs, a function lost is |
| 5452438 |
Image forming apparatus provided with self-diagnosis and self-repair system |
September 19, 1995 |
| The amount of degradation, converted into a fuzzy qualitative value, is found on the basis of state data sensed by sensors 1a, 1b and 1c and degradation data. The value of a parameter changed by the amount of degradation is represented by a fuzzy qualitative value. In addition, the s |
| 5446523 |
Image forming apparatus having self-repair function and self-repair method for the apparatus |
August 29, 1995 |
| In an image forming apparatus according to the present invention, a software portion incorporated in the apparatus is provided with a virtual case storage portion 12, to previously create virtual cases by a virtual case compiler 16 outside of the apparatus and store the virtual cases. |
| 5396314 |
Image forming apparatus having functional redundancy system |
March 7, 1995 |
| An image forming apparatus has a functional redundancy system by which an inherent function normally performed by a certain portion is performed as a potential function by another portion, when such certain portion no longer can be perform its inherent function. In a first operative |
| 5317368 |
Image forming apparatus capable of making self-diagnosis |
May 31, 1994 |
| According to the present invention, a self-diagnosis system for an image forming apparatus can make accurate fault diagnosis and is made smaller in size and higher in speed. For that purpose, a fault temporarily developed by the image forming apparatus is limited to a single fault assump |
| 5239547 |
Self-diagnosis and self-repair system for image forming apparatus |
August 24, 1993 |
| The system of the present invention has a plurality of sensors 1a, 1b and 1c and a system control circuit which includes a case memory portion and a work script memory portion. In response to application of state data from the sensors 1a, 1b and 1c, the system converts the state data int |
| 5166934 |
Self-diagnois and repair system for image forming apparatus |
November 24, 1992 |
| A system according to the invention has a plurality of sensors, a system control circuit and a plurality of actuators. State data, supplied from the sensors, is compared with characteristic data in the system control circuit. From this comparison, it is judged whether a fault has occurre |
